Living on a balance beam (HP Sirius Black)

Icelyn is a young girl that lives with her stepmother, real sister, and her stepsisters. Her parents died when they were very young she promised to stay brave and kind for them. What will happen when she is accepted into Hogwarts school of witchcraft and wizardry? What house will she be sorted in? What will happen when she falls for a player?
Marauders era